Bolt for doors.



G. H. STANBRIDGE.

BOLT FOR DOORS.

APPLIUATION FILED NOV.1B,1912.

1,108,939, v Patented Sept.'1,1914.

2 SHEETS-SHEET 1.

TIIE AORRIS PETERS CO. PHOTD-LIYHCL. WASHINGTON. D. (:Y

G. H. STANBRIDGE.

BOLT FOR DOORS.

APPLI'OATION'IILED NOV. 13, 1912.

Patented Sept. 1, 1914.

2 SHEETS-SHEET 2.

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BOLT son spoons;

' a Specification of Letters Patent.

T0 all'whom it may concern:

Be it known that I, GEORGE invented certain newanduseful Improvements in Bolts for Doors; and I hereby declare the following to be a full, clear, and

exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same. 1

This invention relates to new and useful improvements in bolts for-doors .and particularly to the bolts.

The object of this invention is to provide a bolt of this type for the doors of public buildings, theaters, factories and the like,

which will prevent the doors from being opened from the outside but which will permit them to be readily opened from side in case of panics,

1 My invention, therefore, consists in the provision in connection with a bolt suitable unbolted. Fig. 3 is a section on line 83,

Fig. 1. Fig. 4: is a section on lined-4, Fig. 2. Fig. 5 1s a vlew in elevation showlng my invention applied to a double door. Fig. 6

is a section on line 6-6, Fig. 5.

Again referring to the drawings, and particularly to Figs. 1 to 4, inclusive, 10 represents the door casing and 11 represents the door. The door is hinged at one side of the casing in the usual manner so as to swing out. On the lnner face of the door near the free edge of the door is secured a bolt sheath 15 of the usual form in which is mounted a bolt 16 and in the casing of the door is formed a bolt socket 17 adapted to receive the outer end of the said bolt. The outer end of said bolt 16 is preferably beveled, as shown at 18, to facilitate the entrance of the end of the bolt into the socket and in case the I H. STAN, BRIDGE, a citizen of, the United States of America, residing' at Cleveland, in the county of Cuyahoga and-State of Ohio, have type of bolts known as panic mounted in theear s 25 and the. end of the longer lever 27 is provided with an eye 29 the in 'rnn STATESZPATENT OFFICE.

I Patented Sept.1,1914. v Applicationfi1edNovember18 1912. Serial 732,022

door is warped or sprung the beveled end enables the bolt toenterthe socket and line upthe door in its proper position in the casi-1 1g.,On therearend of the-bolt 16 is sheath 15 is arranged-a small support or stand boltlever 22 and oneend ofsaid bolt. lever is formed an eye 20.1 At the side of. thebolt 22 is arranged-togextend into theeye 20in ,armsfoneof which is preferably somewhat longer thanthe other and the. said levers are pivotally connected at 28 to form a toggle.

The'end of the shorter lever 26 is pivotally @the lug 19. On the face of the door near the adapted to receive the end of the bolt lever 22. The arrangement of the levers is such that when the said levers 26 and 27' lie against or parallel with the surface of the door the bolt lever 22 will be in the position shown in'Fig. 2 and the bolt will be withdrawn from its socket, and when thelevers 26 and 27 are pulled out from the .door so as to stand at an angle to each other and to the door the bolt lever 22 will be thrown around in the opposite direction to the position shown in Fig. 1, and the bolt will be forced into-its socket thereby securing the door. The operation of the device will therefore be readily understood. If we assume that the door is bolted then, as before stated, the levers 26 and 27 which form the I toggle will stand out from the door, as most clearly shown inFig. 3. In case of a panic whlch causes a sudden rush or crowding around the door the person or persons near- I est to the door will be pushed or forced against the outwardly projecting levers'or toggle and the pressure exerted thereon will cause the levers to be pressed up against the door which will swing around the bolt lever 22 thereby withdrawing the bolt and permit ting the door to swing open. 3 In Figs. 5 and 6 I have shown my invention applied to one of a pair of double doors.

As it is customary to use two bolts on a door of. this character it is necessary also toldu plicate the mechanism heretofore described, and in addition thereto is provided ayoke 30 which has forked ends3 1, IThis yoke 30 bridges the space between the toggles and V the ends of said yoke 30 are operatively connected With the levers of said toggles by means of pins 32 which pass through slots 33 formed in said levers. The operationin this case is the same as before described, ex-

cept that the yoke member will receive the pressure and Will simultaneously cause the operation of both bolt operating mechanisms. v

What I claim is, v j- 1. In a device of the character indicated, the combination With a door and its sur rounding casing, of a bolt slidably mounted on said door and adapted to engage with said casing so as to hold said door against lmovement, saiu bolt being provided with a lug having an eye therein, a support 1nounted-near said bolt, a bolt lever mounted on said support so as tooscillate around a horizontal axis, one end of said lever being adapted to eXtend'into the eye on said bolt and a toggle, one member of said toggle beend provided with an eye adapted to receive one end of the bolt lever, for the purpose set forth 2. In a device of the character indicated, the combination With a door and its surrounding casing, of pair of bolts slidably mounted on said door, a bolt lever plvotally mounted near each bolt and having one end connected With the adjacent bolt, a pair of toggles, one end of each toggle being secured to the door and the other end being secured to the adjacent bolt lever and a yoke operatively connecting said toggles.

In testimony whereof, I sign the foregoing specification, in the presence of twowitnesses. l

GEORGE E. STANBRIDGE. Witnesses:

,. ANDREW L. KRAFFERT,

H. L. MoDoNNnLL.

'c opics of this patent may be cbtaine d tor five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

